Enabling MSR debugging mode on MPC8541cds

[Bizhan Gholikhamseh (bgholikh)]

Hi All,
I am working on powerpc git tree version
Linux-2.6.22-rc4-geff2ebd2-dirty.
Our custom board is based on mpc8541cds. I am trying to use Jtag to
debug
the kernel issues. I have done the following changes to the source tree:
 
On the top directory Makefile:
 
CC                = $(CROSS_COMPILE)gcc -g2 -gdwarf-2
AFLAG_KERNEL = -Wa,gdwarf2
 
include/asm-powerpc/reg_booke.h:
/* Default MSR for kernel mode. */ 
#if defined (CONFIG_40x) 
#define MSR_KERNEL (MSR_ME|MSR_RI|MSR_IR|MSR_DR|MSR_CE|MSR_DE)  
#elif defined(CONFIG_BOOKE) 
#define MSR_KERNEL (MSR_ME|MSR_RI|MSR_CE|MSR_DE)
 
However, I can see through Jtag that the MSR_DE (the debug bit) is not
set on the, 
so I am not able to set break points.
 
Any help greatly appreciated.
 
Regards,
Bizhan
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